ext4: remove useless conditional branch code

It's ok because the code will be optimized by the compiler, just
try to simple the code.

Signed-off-by: wuchi <wuchi.zero@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20230401075303.45206-1-wuchi.zero@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

Author: ChiWu-Zero

fs/ext4/bitmap.c

@@ -74,10 +74,7 @@ int ext4_block_bitmap_csum_verify(struct super_block *sb,
 	} else
 		calculated &= 0xFFFF;
 
-	if (provided == calculated)
-		return 1;
-
-	return 0;
+	return provided == calculated;
 }
 
 void ext4_block_bitmap_csum_set(struct super_block *sb,