xhci: fix memleak in xhci_run()
Found this issue by kmemleak.
xhci_run() did not check return val and free command for
xhci_queue_vendor_command()
unreferenced object 0xffff88011c0be500 (size 64):
comm "kworker/0:1", pid 58, jiffies
4294670908 (age 50.420s)
hex dump (first 32 bytes):
backtrace:
[<
ffffffff8176166a>] kmemleak_alloc+0x4a/0xa0
[<
ffffffff8121801a>] kmem_cache_alloc_trace+0xca/0x1d0
[<
ffffffff81576bf4>] xhci_alloc_command+0x44/0x130
[<
ffffffff8156f1cc>] xhci_run+0x4cc/0x630
[<
ffffffff8153b84b>] usb_add_hcd+0x3bb/0x950
[<
ffffffff8154eac8>] usb_hcd_pci_probe+0x188/0x500
[<
ffffffff815851ac>] xhci_pci_probe+0x2c/0x220
[<
ffffffff813d2ca5>] local_pci_probe+0x45/0xa0
[<
ffffffff810a54e4>] work_for_cpu_fn+0x14/0x20
[<
ffffffff810a8409>] process_one_work+0x149/0x360
[<
ffffffff810a8d08>] worker_thread+0x1d8/0x3c0
[<
ffffffff810ae7d9>] kthread+0x109/0x140
[<
ffffffff8176d585>] ret_from_fork+0x25/0x30
[<
ffffffffffffffff>] 0xffffffffffffffff
Cc: <stable@vger.kernel.org>
Signed-off-by: Shu Wang <shuwang@redhat.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>