powerpc/ps3: Drop redundant result assignment

Return value of ps3_start_probe_thread() is not used, so code can be
simplified to fix W=1 clang warnings:

  arch/powerpc/platforms/ps3/device-init.c:953:6: error: variable 'result' set but not used [-Werror,-Wunused-but-set-variable]

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260317130823.240279-3-krzysztof.kozlowski@oss.qualcomm.com

Author: krzk

arch/powerpc/platforms/ps3/device-init.c

@@ -950,16 +950,14 @@ static int __init ps3_start_probe_thread(enum ps3_bus_type bus_type)
 
 static int __init ps3_register_devices(void)
 {
-	int result;
-
 	if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
 		return -ENODEV;
 
 	pr_debug(" -> %s:%d\n", __func__, __LINE__);
 
 	/* ps3_repository_dump_bus_info(); */
 
-	result = ps3_start_probe_thread(PS3_BUS_TYPE_STORAGE);
+	ps3_start_probe_thread(PS3_BUS_TYPE_STORAGE);
 
 	ps3_register_vuart_devices();