mm/shmem.c: clean code by removing unnecessary assignment

Previously 0 was assigned to variable 'error' but the variable was never
read before reassignemnt later.  So the assignment can be removed.

Signed-off-by: Mateusz Nosek <mateusznosek0@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Link: http://lkml.kernel.org/r/20200301152832.24595-1-mateusznosek0@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Author: Mateusz Nosek

mm/shmem.c

@@ -3120,12 +3120,9 @@ static int shmem_symlink(struct inode *dir, struct dentry *dentry, const char *s
 
 	error = security_inode_init_security(inode, dir, &dentry->d_name,
 					     shmem_initxattrs, NULL);
-	if (error) {
-		if (error != -EOPNOTSUPP) {
-			iput(inode);
-			return error;
-		}
-		error = 0;
+	if (error && error != -EOPNOTSUPP) {
+		iput(inode);
+		return error;
 	}
 
 	inode->i_size = len-1;