[BUG] wbsd.c: after spin_lock_bh uses spin_unlock instead spin_unlock_bh

[Alexander Strakh <strakh@ispras.ru>]

	KERNEL_VERSION: 2.6.31
	DESCRIBE:
Driver ./drivers/mmc/host/wbsd.c calls spin_lock_bh and then spin_unlock 
instead of spin_unlock_bh:

 753 static void wbsd_request(struct mmc_host *mmc, struct mmc_request *mrq)
...
 761         spin_lock_bh(&host->lock);
...
 844 done:
 845         wbsd_request_end(host, mrq);
 846
 847         spin_unlock_bh(&host->lock);
 848 }

But in wsdb_request calls spin_unlock/spin_lock instead of 
spin_unlock_bh/spin_lock_bh;

 206 static void wbsd_request_end(struct wbsd_host *host, struct mmc_request 
...
 230         spin_unlock(&host->lock);
 231         mmc_request_done(host->mmc, mrq);
 232         spin_lock(&host->lock);
 233 }

Found by : Linux Driver Verification