RDMA: Remove unnecessary NULL values

The NULL initialization of the pointers assigned by kzalloc() first is
not necessary, because if the kzalloc() failed, the pointers will be
assigned NULL, otherwise it works as usual. so remove it.
Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com>
Link: https://lore.kernel.org/r/20230804082102.3361961-1-ruanjinjie@huawei.comSigned-off-by: Leon Romanovsky <leon@kernel.org>

drivers/infiniband/core/iwpm_util.c

@@ -307,7 +307,7 @@ int iwpm_get_remote_info(struct sockaddr_storage *mapped_loc_addr,
 struct iwpm_nlmsg_request *iwpm_get_nlmsg_request(__u32 nlmsg_seq,
 					u8 nl_client, gfp_t gfp)
 {
-	struct iwpm_nlmsg_request *nlmsg_request = NULL;
+	struct iwpm_nlmsg_request *nlmsg_request;
 	unsigned long flags;
 
 	nlmsg_request = kzalloc(sizeof(struct iwpm_nlmsg_request), gfp);

drivers/infiniband/hw/irdma/verbs.c

@@ -2865,8 +2865,8 @@ static struct irdma_mr *irdma_alloc_iwmr(struct ib_umem *region,
 					 enum irdma_memreg_type reg_type)
 {
 	struct irdma_device *iwdev = to_iwdev(pd->device);
-	struct irdma_pbl *iwpbl = NULL;
-	struct irdma_mr *iwmr = NULL;
+	struct irdma_pbl *iwpbl;
+	struct irdma_mr *iwmr;
 	unsigned long pgsz_bitmap;
 
 	iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);