[alibaba-cloud:linux-next 8423/9999] drivers/infiniband/core/addr.c:473:13: warning: variable 'ret' set but not used

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/alibaba/cloud-kernel.git linux-next
head:   d121e0c25d1a19485d7f293b67901462bb1a6552
commit: d6d722c84c60b998067871f2d96e9dc4e5da706f [8423/9999] RDMA/core: Protect against changing dst->dev during destination resolve
config: x86_64-randconfig-a015 (https://download.01.org/0day-ci/archive/20230322/202303220105.k4IYt222-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/alibaba/cloud-kernel/commit/d6d722c84c60b998067871f2d96e9dc4e5da706f
        git remote add alibaba-cloud https://github.com/alibaba/cloud-kernel.git
        git fetch --no-tags alibaba-cloud linux-next
        git checkout d6d722c84c60b998067871f2d96e9dc4e5da706f
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/infiniband/core/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303220105.k4IYt222-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/infiniband/core/addr.c: In function 'copy_src_l2_addr':
>> drivers/infiniband/core/addr.c:473:13: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
     473 |         int ret = 0;
         |             ^~~


vim +/ret +473 drivers/infiniband/core/addr.c

200298326b276d Matan Barak  2015-12-23  467  
d6d722c84c60b9 Parav Pandit 2018-09-05  468  static void copy_src_l2_addr(struct rdma_dev_addr *dev_addr,
23084924636ed4 Parav Pandit 2018-09-05  469  			     const struct sockaddr *dst_in,
d6d722c84c60b9 Parav Pandit 2018-09-05  470  			     const struct dst_entry *dst,
d6d722c84c60b9 Parav Pandit 2018-09-05  471  			     const struct net_device *ndev)
23084924636ed4 Parav Pandit 2018-09-05  472  {
23084924636ed4 Parav Pandit 2018-09-05 @473  	int ret = 0;
23084924636ed4 Parav Pandit 2018-09-05  474  
23084924636ed4 Parav Pandit 2018-09-05  475  	if (dst->dev->flags & IFF_LOOPBACK)
23084924636ed4 Parav Pandit 2018-09-05  476  		ret = rdma_translate_ip(dst_in, dev_addr);
23084924636ed4 Parav Pandit 2018-09-05  477  	else
0652a52eb6eec4 Parav Pandit 2018-09-05  478  		rdma_copy_src_l2_addr(dev_addr, dst->dev);
32fb22f5355899 Parav Pandit 2018-09-05  479  
32fb22f5355899 Parav Pandit 2018-09-05  480  	/*
32fb22f5355899 Parav Pandit 2018-09-05  481  	 * If there's a gateway and type of device not ARPHRD_INFINIBAND,
32fb22f5355899 Parav Pandit 2018-09-05  482  	 * we're definitely in RoCE v2 (as RoCE v1 isn't routable) set the
32fb22f5355899 Parav Pandit 2018-09-05  483  	 * network type accordingly.
32fb22f5355899 Parav Pandit 2018-09-05  484  	 */
32fb22f5355899 Parav Pandit 2018-09-05  485  	if (has_gateway(dst, dst_in->sa_family) &&
d6d722c84c60b9 Parav Pandit 2018-09-05  486  	    ndev->type != ARPHRD_INFINIBAND)
32fb22f5355899 Parav Pandit 2018-09-05  487  		dev_addr->network = dst_in->sa_family == AF_INET ?
32fb22f5355899 Parav Pandit 2018-09-05  488  						RDMA_NETWORK_IPV4 :
32fb22f5355899 Parav Pandit 2018-09-05  489  						RDMA_NETWORK_IPV6;
32fb22f5355899 Parav Pandit 2018-09-05  490  	else
32fb22f5355899 Parav Pandit 2018-09-05  491  		dev_addr->network = RDMA_NETWORK_IB;
d6d722c84c60b9 Parav Pandit 2018-09-05  492  }
32fb22f5355899 Parav Pandit 2018-09-05  493  

:::::: The code at line 473 was first introduced by commit
:::::: 23084924636ed44eaea811f8d28c5f80dbb76461 RDMA/core: Introduce and use rdma_set_src_addr() between IPv4 and IPv6

:::::: TO: Parav Pandit <parav@mellanox.com>
:::::: CC: Xuan Zhuo <xuanzhuo@linux.alibaba.com>

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