drm/vmwgfx: Handle vmalloc() failure in vmw_local_fifo_reserve()

If vmalloc() fails then we need to a bit of cleanup before returning.

Cc: <stable@vger.kernel.org>
Fixes: fb1d9738ca05 ("drm/vmwgfx: Add DRM driver for VMware Virtual GPU")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
index b6a0806b06bf..a1c68e6a689e 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
@@ -368,6 +368,8 @@ static void *vmw_local_fifo_reserve(struct vmw_private *dev_priv,
                                 return fifo_state->static_buffer;
                         else {
                                 fifo_state->dynamic_buffer = vmalloc(bytes);
+                                if (!fifo_state->dynamic_buffer)
+                                        goto out_err;
                                 return fifo_state->dynamic_buffer;
                         }
                 }