drm/radeon: remove some dead code

If "rdev->bios" is NULL then we don't need to free it.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c
index 00cfb5d..04c0ed4 100644
--- a/drivers/gpu/drm/radeon/radeon_bios.c
+++ b/drivers/gpu/drm/radeon/radeon_bios.c
@@ -638,10 +638,8 @@
 					     vhdr->ImageLength,
 					     GFP_KERNEL);
 
-			if (!rdev->bios) {
-				kfree(rdev->bios);
+			if (!rdev->bios)
 				return false;
-			}
 			return true;
 		}
 	}