[PATCH][next] bcache: Set error return err to -ENOMEM on allocation failure

From: Colin King
Date: Mon Apr 19 2021 - 08:56:32 EST

From: Colin Ian King <colin.king@xxxxxxxxxxxxx>

Currently when ns fails to be allocated the error return path returns
an uninitialized return code in variable 'err'. Fix this by setting
err to -ENOMEM.

Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: 688330711e9a ("bcache: initialize the nvm pages allocator")
Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
drivers/md/bcache/nvm-pages.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/md/bcache/nvm-pages.c b/drivers/md/bcache/nvm-pages.c
index 08cd45e90481..2e124d546099 100644
--- a/drivers/md/bcache/nvm-pages.c
+++ b/drivers/md/bcache/nvm-pages.c
@@ -584,6 +584,7 @@ struct bch_nvm_namespace *bch_register_namespace(const char *dev_path)
return ERR_PTR(PTR_ERR(bdev));

+ err = -ENOMEM;
ns = kzalloc(sizeof(struct bch_nvm_namespace), GFP_KERNEL);
if (!ns)
goto bdput;