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>

drivers/gpu/drm/radeon/radeon_bios.c

@@ -638,10 +638,8 @@ static bool radeon_acpi_vfct_bios(struct radeon_device *rdev)
 					     vhdr->ImageLength,
 					     GFP_KERNEL);
 
-			if (!rdev->bios) {
-				kfree(rdev->bios);
+			if (!rdev->bios)
 				return false;
-			}
 			return true;
 		}
 	}