Ext2: remove the overhead check about sb in the function ext2_new_blocks

It can be guranteed that inode->i_sb should not be null in vfs.
So here the check about it is overhead.

Signed-off-by: Wang Shilong <[e-mail]>
Signed-off-by: Jan Kara <[e-mail]>

fs/ext2/balloc.c

···
 
 	*errp = -ENOSPC;
 	sb = inode->i_sb;
-	if (!sb) {
-		printk("ext2_new_blocks: nonexistent device");
-		return 0;
-	}
 
 	/*
 	 * Check quota for allocation of this block.