mmc: sdhci: Fix a potential uninitialized variable

Smatch complains that "ret" can be used without being initialized.

drivers/mmc/host/sdhci.c
  4383          if (!IS_ERR(mmc->supply.vqmmc)) {
  4384                  if (enable_vqmmc) {
                            ^^^^^^^^^^^^
  4385                          ret = regulator_enable(mmc->supply.vqmmc);
                                ^^^^^
  4386                          host->sdhci_core_to_disable_vqmmc = !ret;
  4387                  }

"ret" is only initialized when "enable_vqmmc" is true.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20200714141410.GB314989@mwanda
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index d3b62fc..3d27206 100644 (file)
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -4104,7 +4104,7 @@ int sdhci_setup_host(struct sdhci_host *host)
        unsigned int ocr_avail;
        unsigned int override_timeout_clk;
        u32 max_clk;
-       int ret;
+       int ret = 0;
        bool enable_vqmmc = false;
 
        WARN_ON(host == NULL);