scsi: ufs: ufshcd: fix potential NULL pointer dereference in ufshcd_config_vreg
_vreg_ is being dereferenced before it is null checked, hence there is a potential null pointer dereference. Fix this by moving the pointer dereference after _vreg_ has been null checked. This issue was detected with the help of Coccinelle. Fixes: aa497613 ("ufs: Add regulator enable support") Signed-off-by: NGustavo A. R. Silva <garsilva@embeddedor.com> Reviewed-by: NSubhash Jadavani <subhashj@codeaurora.org> Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
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