xfs: simplify if-else condition in xfs_reflink_trim_around_shared

"else" is not generally useful after a return,
so remove it for clean code.

There is no logical changes.
Signed-off-by: NZeng Heng <zengheng4@huawei.com>
Reviewed-by: NDarrick J. Wong <djwong@kernel.org>
Signed-off-by: NDave Chinner <david@fromorbit.com>

fs/xfs/xfs_reflink.c

@@ -200,7 +200,9 @@ xfs_reflink_trim_around_shared(
 	if (fbno == NULLAGBLOCK) {
 		/* No shared blocks at all. */
 		return 0;
-	} else if (fbno == agbno) {
+	}
+
+	if (fbno == agbno) {
 		/*
 		 * The start of this extent is shared.  Truncate the
 		 * mapping at the end of the shared region so that a
@@ -210,7 +212,8 @@ xfs_reflink_trim_around_shared(
 		irec->br_blockcount = flen;
 		*shared = true;
 		return 0;
-	} else {
+	}
+
 	/*
 	 * There's a shared extent midway through this extent.
 	 * Truncate the mapping at the start of the shared
@@ -219,7 +222,6 @@ xfs_reflink_trim_around_shared(
 	 */
 	irec->br_blockcount = fbno - agbno;
 	return 0;
-	}
 }
 
 int