[PATCH] printk: fix returnvar.cocci warnings

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

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CC: kbuild-all(a)lists.01.org
TO: John Ogness <john.ogness@linutronix.de>
CC: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

From: kernel test robot <lkp@intel.com>

kernel/printk/printk.c:2808:5-8: Unneeded variable: "ret". Return "- ENOMEM" on line 2819


 Remove unneeded variable used to store return value.

Generated by: scripts/coccinelle/misc/returnvar.cocci

Fixes: ca4fcaa60de9 ("printk: move console printing to kthreads")
CC: John Ogness <john.ogness@linutronix.de>
Signed-off-by: kernel test robot <lkp@intel.com>
---

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-5.10.y-rt-rebase
head:   87b7b3d2cb296950a0e3005406899ccfbbc9da7c
commit: ca4fcaa60de914c0ef6864983a8488bf5ab6cafb [57/209] printk: move console printing to kthreads
:::::: branch date: 2 days ago
:::::: commit date: 2 days ago

Please take the patch only if it's a positive warning. Thanks!

 printk.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -2805,7 +2805,6 @@ static int printk_kthread_func(void *dat
 	char *ext_text = NULL;
 	size_t dropped_len;
 	char *dropped_text;
-	int ret = -ENOMEM;
 	char *write_text;
 	u64 printk_seq;
 	size_t len;
@@ -2816,7 +2815,7 @@ static int printk_kthread_func(void *dat
 	if (con->flags & CON_EXTENDED) {
 		ext_text = kmalloc(CONSOLE_EXT_LOG_MAX, GFP_KERNEL);
 		if (!ext_text)
-			return ret;
+			return -ENOMEM;
 	}
 	text = kmalloc(LOG_LINE_MAX + PREFIX_MAX, GFP_KERNEL);
 	dropped_text = kmalloc(64, GFP_KERNEL);
@@ -2904,7 +2903,7 @@ out:
 	pr_info("%sconsole [%s%d]: printing thread stopped\n",
 		(con->flags & CON_BOOT) ? "boot" : "" ,
 		con->name, con->index);
-	return ret;
+	return -ENOMEM;
 }
 
 static void start_printk_kthread(struct console *con)