btrfs: send: simplify allocation code in fs_path_ensure_buf

Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fb.com>

fs/btrfs/send.c

@@ -352,24 +352,18 @@ static int fs_path_ensure_buf(struct fs_path *p, int len)
 	/*
 	 * First time the inline_buf does not suffice
 	 */
-	if (p->buf == p->inline_buf) {
-		p->buf = kmalloc(len, GFP_NOFS);
-		if (!p->buf)
-			return -ENOMEM;
-		/*
-		 * The real size of the buffer is bigger, this will let the
-		 * fast path happen most of the time
-		 */
-		p->buf_len = ksize(p->buf);
-	} else {
-		char *tmp;
-
-		tmp = krealloc(p->buf, len, GFP_NOFS);
-		if (!tmp)
-			return -ENOMEM;
-		p->buf = tmp;
-		p->buf_len = ksize(p->buf);
-	}
+	if (p->buf == p->inline_buf)
+		tmp_buf = kmalloc(len, GFP_NOFS);
+	else
+		tmp_buf = krealloc(p->buf, len, GFP_NOFS);
+	if (!tmp_buf)
+		return -ENOMEM;
+	p->buf = tmp_buf;
+	/*
+	 * The real size of the buffer is bigger, this will let the fast path
+	 * happen most of the time
+	 */
+	p->buf_len = ksize(p->buf);
 
 	if (p->reversed) {
 		tmp_buf = p->buf + old_buf_len - path_len - 1;