cifs: Fix soft lockup during fsstress

commit 71826b0 upstream.

Below traces are observed during fsstress and system got hung.
[  130.698396] watchdog: BUG: soft lockup - CPU#6 stuck for 26s!

Cc: stable@vger.kernel.org # 5.13+
Signed-off-by: Rohith Surabattula <rohiths@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

fs/cifs/misc.c

@@ -736,7 +736,7 @@ cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode)
 			if (cancel_delayed_work(&cfile->deferred)) {
 				tmp_list = kmalloc(sizeof(struct file_list), GFP_ATOMIC);
 				if (tmp_list == NULL)
-					continue;
+					break;
 				tmp_list->cfile = cfile;
 				list_add_tail(&tmp_list->list, &file_head);
 			}
@@ -767,7 +767,7 @@ cifs_close_all_deferred_files(struct cifs_tcon *tcon)
 			if (cancel_delayed_work(&cfile->deferred)) {
 				tmp_list = kmalloc(sizeof(struct file_list), GFP_ATOMIC);
 				if (tmp_list == NULL)
-					continue;
+					break;
 				tmp_list->cfile = cfile;
 				list_add_tail(&tmp_list->list, &file_head);
 			}