GFS2: Fix typo in gfs2_create_inode()

PTR_RET should be PTR_ERR

Reported-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

fs/gfs2/inode.c

@@ -594,7 +594,7 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
 		}
 		gfs2_glock_dq_uninit(ghs);
 		if (IS_ERR(d))
-			return PTR_RET(d);
+			return PTR_ERR(d);
 		return error;
 	} else if (error != -ENOENT) {
 		goto fail_gunlock;