mmc: core: Remove redundant null check

This change removes a redundant null check found by Smatch.

Fixes: 403a029 ("mmc: core: Add open-ended Ext memory addressing")
Reported-by: Dan Carpenter <[email protected]>
Closes: https://lore.kernel.org/linux-mmc/[email protected]/
Signed-off-by: Avri Altman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Ulf Hansson <[email protected]>

Author: avri-altman-sndk

drivers/mmc/core/core.c

@@ -335,7 +335,7 @@ int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
 {
 	int err;
 
-	if (mrq->cmd && mrq->cmd->has_ext_addr)
+	if (mrq->cmd->has_ext_addr)
 		mmc_send_ext_addr(host, mrq->cmd->ext_addr);
 
 	init_completion(&mrq->cmd_completion);